Heading-machine.



PATENTED MAR. 5, 1907.

E. 0. MEYER. HEADING' MACHINE.

APPLI'OATION FILED 0012.23, 1905.

2 SHEETS-SHEET. 1.

wifizesses. v y jnvenzoa' rnl' NORRIS PITIRS :o., wAst-nunrou, D. c.

No.'845,806. PATENTED MAR. 5, 1.907:

' E. or MEYER.

HEA'DING MACHINE. APPLICATION- rmm OUT. as, 1906.

' z sums-sum 2.

.IINITED STATES PATENT OFFIOEO ERNEST C. MEYER, OF CLEVELAND, OHIO, ASSIGNOR TO THE CHAMPION MACHINERY COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

HEADlNG-MACHINE.

Specification of Letters Patent.

Patented March 5, 1907.

Application filed October 23,1905. Serial No. 283,994.

To (ZZZ whom it may concern- Be it known that I, ERNEST C. MEYER, a citizen of the United States, and a resident of Cleveland, county of Cuyahoga, and State of Ohio, have invented certain new and useful Improvements in Heading-Machines, of

which the following is a specification, the principle of the invention being herein explained and the best mode in which I have contemplated applying that principle so as to distinguish it from other inventions.

The annexed drawings and the following description set forth in detail one mechanical form embodying the invention, such detail construction being but one of various mechanical forms in which the principle of the invention may be used.

In said annexed drawings, Figure I represents a top plan view of my improved heading-machine, Fig. II, a top view of the togg e-slide and its guides; and Fig. III, a longitudinal vertical section of said slide and its pitman, taken on the line III III in Figs. I and II.

The toggle-slide is illustrated as appliedin a heading-machine of the general construction usual in such machines, and said machine has a frame 1, in one end of which is journaled a crank-shaft 2, having a fly-wheel 3 and two cranks 4 and 5. The crank 4 has a pitman 6 pivoted to it, and said pitman is pivoted to a heading-slide 7, guided in longitudinal ways 8 and having a heading-die 9 secured in its forward end. This headingdie registers with the die-opening formed between a stationary clamping-die 10 and a movable clamping-die 11, the die-opening registering with a feed-opening 12 in the table of the frame. The movable clampingdie is secured to a clamping-die slide 13, sliding in ways 14 upon the machine-frame and at right angles to the heading-slideways. A toggle-arm 15 is pivoted to the clampingslide and to a toggle-head 16, to which is also pivoted a toggle-arm 17, the other end of which is pivoted to a rigid support 18 upon the machine table. The toggle-head has an arm 19, which is pivoted in a head 20, formed with a shank 21, which longitudinally slides within a toggle-slide 22, guided in longitudinal ways 23 upon the machine-table and having a pitman 24 pivoted to its rear end and to the crank 5 of the drive-shaft. A bolt 25 passes through the shank of the toggle-head and has its ends guided in longitudinal slots 26 in the toggle-slide. The rear or inner end of the shank of the slide-head has a rabbet 27, forming a shoulder, and longer rabbet 28, also forming a shoulder' The hook-shaped rear arm 29 of a catch-lever 30 engages the rear shoulder with its hooked end, and said catch-lever is pivoted between ears 31 upon the upper side of the toggle-slide, projecting with its hooked arm through a slot 32 in the upper side of the toggle-slide. The longer forwardarm of this catch-lever has a rod 33 pivoted to its end and projecting upward through a hole in the closed bottom of a oylindrical housing 34, supported upon and above the upper side of the toggle-slide. A spring 35 is coiled within this housing, and a follower 36 bears against the upper end of the coiled spring. The rod passes through a central hole in this follower and has a nut 37 on its upper screw-threaded end, which nut bears against the upper side of the follower.

In practice when the crank-shaft is rotated and the stock to be headed is fed through opening 12 between the clampin dies the reciprocation of the toggle-slide wi l flex and straighten the toggle-arms, reciprocating the clamping-die slide and drawin the movable clamping-die away from an pushing it toward the stationary clampingdie. When the stock is clamped between the two clamping-dies, the heading-die and slide is thrown forward by its crank to head the stock held between the clamping-dies. If by accident an object which connot be accommodated between the clamping-dies should get in between said dies, the dies cannot make their normal closure. The undue strain caused bythis obstruction against the forward movement of the toggle-slide in its effort to straighten the toggle-arm and close the clamping-dies causes the slide-head to move into the slide, and the rear shoulder of the shank of the slide-head will slip from under the hooked end of the catch-lever, which will slip up into the longer rabbet. In this way the toggle-slide can move forward without closing the clamping-dies or breaking the several parts of the slide, toggle-head, togglearms, and clamping-slide, as otherwise would happen in the unsuccessful attempt to close theclamping-dies. This safety device will thus protect the machine against breakage on account of obstruction to the closing of the clamping-dies, and the hooked end of the catch-lever will hold the slide-head and its shank in normal position under normal conditions, while allowing the slide-head to yield to undue and abnormal strain by obstruction to the closing of the clamping-dies. The tension of the spring which draws and holds the hooked latchlever into engagement with the shoulder of the slide-head shank may be adjusted by the nut upon the rod, so that the hooked end of the lever may sufficiently hold its engagement with the slide under normal conditions, but will immediately let go under undue strain and abnormal conditions.

Other modes of applying the principle of my invention may be employed for the mode herein explained. Change may therefore be made as regards the mechanism thus dis closed, provided the principles of construction set forth respectively in the following claims are employed.

I therefore particularly point out and distinctly claim as my invention 1. The combination of a reciprocating slide, a head having a shank longitudinally movable within the slide and formed with a longitudinal rabbet upon one side, a hooked arm engaging a shoulder at the end of the shank with its end and from the concave side to be forced into the rabbet under excessive longitudinal strain, and a spring connected to the hooked arm to hold the same into engagement with the shoulder and rabbet.

2. The combination of a reciprocating slide, a head having a shank longitudinally movable Within the slide and formed with a shoulder at its inner end and a longitudinal rabbet from the shoulder, a latch-lever pivoted in the slide and having a hookedar'm engaging the shoulder from its concave side, and a spring connected to the other arm of the lever to force the hook down to its engagement.

3. The combination of a reciprocating slide formed with a longitudinal bore having opposed longitudinal slots, a head having a shank slidable in the bore of the slide and formed with a small rabbet at its rear end forming a shoulder and a long rabbet above said shoulder forming another shoulder, a bolt through the shank and sliding in the slots in the slide, a latch-lever pivoted on the slide and having a hooked arm engaging the rear shoulder of the shank, a housing upon the slide, a coiled spring in said housing, a follower bearing against said spring, and a rod pivoted to the long arm of the latch-lever and axially passing through the housing, spring and follower and provided with a nut upon its threaded end bearing against the fol lower.

In testimony that I claim the foregoing to be my invention I have hereunto set my hand this 23d day of June, A. D. 1905.

ERNEST C. MEYER. Witnesses:

WVM. SEonER, CHAS. D. MILLER. 

